diff --git a/lib/Doctrine/DBAL/Driver/PDOSqlite/Driver.php b/lib/Doctrine/DBAL/Driver/PDOSqlite/Driver.php
index cee851e80..835d29660 100644
--- a/lib/Doctrine/DBAL/Driver/PDOSqlite/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/PDOSqlite/Driver.php
@@ -34,6 +34,7 @@ class Driver implements \Doctrine\DBAL\Driver
     protected $_userDefinedFunctions = array(
         'sqrt' => array('callback' => array('Doctrine\DBAL\Platforms\SqlitePlatform', 'udfSqrt'), 'numArgs' => 1),
         'mod'  => array('callback' => array('Doctrine\DBAL\Platforms\SqlitePlatform', 'udfMod'), 'numArgs' => 2),
+        'locate'  => array('callback' => array('Doctrine\DBAL\Platforms\SqlitePlatform', 'udfLocate'), 'numArgs' => -1),
     );
 
     /**
diff --git a/lib/Doctrine/DBAL/Platforms/AbstractPlatform.php b/lib/Doctrine/DBAL/Platforms/AbstractPlatform.php
index c72a1889e..63e421535 100644
--- a/lib/Doctrine/DBAL/Platforms/AbstractPlatform.php
+++ b/lib/Doctrine/DBAL/Platforms/AbstractPlatform.php
@@ -324,16 +324,16 @@ abstract class AbstractPlatform
     }
 
     /**
-     * locate
      * returns the position of the first occurrence of substring $substr in string $str
      *
      * @param string $substr    literal string to find
      * @param string $str       literal string
+     * @param int    $pos       position to start at, beginning of string by default
      * @return integer
      */
-    public function getLocateExpression($str, $substr)
+    public function getLocateExpression($str, $substr, $startPos = false)
     {
-        return 'LOCATE(' . $str . ', ' . $substr . ')';
+        throw DBALException::notSupported(__METHOD__);
     }
 
     /**
diff --git a/lib/Doctrine/DBAL/Platforms/MySqlPlatform.php b/lib/Doctrine/DBAL/Platforms/MySqlPlatform.php
index fd42bb6c2..a1f8f1b19 100644
--- a/lib/Doctrine/DBAL/Platforms/MySqlPlatform.php
+++ b/lib/Doctrine/DBAL/Platforms/MySqlPlatform.php
@@ -68,6 +68,23 @@ class MySqlPlatform extends AbstractPlatform
         return 'UUID()';
     }
 
+    /**
+     * returns the position of the first occurrence of substring $substr in string $str
+     *
+     * @param string $substr    literal string to find
+     * @param string $str       literal string
+     * @param int    $pos       position to start at, beginning of string by default
+     * @return integer
+     */
+    public function getLocateExpression($str, $substr, $startPos = false)
+    {
+        if ($startPos == false) {
+            return 'LOCATE(' . $substr . ', ' . $str . ')';
+        } else {
+            return 'LOCATE(' . $substr . ', ' . $str . ', '.$startPos.')';
+        }
+    }
+
     /**
      * Returns a series of strings concatinated
      *
diff --git a/lib/Doctrine/DBAL/Platforms/OraclePlatform.php b/lib/Doctrine/DBAL/Platforms/OraclePlatform.php
index 0fc18446a..d86489ca0 100644
--- a/lib/Doctrine/DBAL/Platforms/OraclePlatform.php
+++ b/lib/Doctrine/DBAL/Platforms/OraclePlatform.php
@@ -74,6 +74,23 @@ class OraclePlatform extends AbstractPlatform
         }
     }
 
+    /**
+     * returns the position of the first occurrence of substring $substr in string $str
+     *
+     * @param string $substr    literal string to find
+     * @param string $str       literal string
+     * @param int    $pos       position to start at, beginning of string by default
+     * @return integer
+     */
+    public function getLocateExpression($str, $substr, $startPos = false)
+    {
+        if ($startPos == false) {
+            return 'INSTR('.$str.', '.$substr.')';
+        } else {
+            return 'INSTR('.$str.', '.$substr.', '.$startPos.')';
+        }
+    }
+
     /**
      * Returns global unique identifier
      *
diff --git a/lib/Doctrine/DBAL/Platforms/PostgreSqlPlatform.php b/lib/Doctrine/DBAL/Platforms/PostgreSqlPlatform.php
index a9beb420c..d1316625e 100644
--- a/lib/Doctrine/DBAL/Platforms/PostgreSqlPlatform.php
+++ b/lib/Doctrine/DBAL/Platforms/PostgreSqlPlatform.php
@@ -73,6 +73,24 @@ class PostgreSqlPlatform extends AbstractPlatform
     {
         return 'SIMILAR TO';
     }
+
+    /**
+     * returns the position of the first occurrence of substring $substr in string $str
+     *
+     * @param string $substr    literal string to find
+     * @param string $str       literal string
+     * @param int    $pos       position to start at, beginning of string by default
+     * @return integer
+     */
+    public function getLocateExpression($str, $substr, $startPos = false)
+    {
+        if ($startPos !== false) {
+            $str = $this->getSubstringExpression($str, $startPos);
+            return 'CASE WHEN (POSITION('.$substr.' IN '.$str.') = 0) THEN 0 ELSE (POSITION('.$substr.' IN '.$str.') + '.($startPos-1).') END';
+        } else {
+            return 'POSITION('.$substr.' IN '.$str.')';
+        }
+    }
     
     /**
      * parses a literal boolean value and returns
diff --git a/lib/Doctrine/DBAL/Platforms/SqlitePlatform.php b/lib/Doctrine/DBAL/Platforms/SqlitePlatform.php
index 4dcef06e3..01b72c253 100644
--- a/lib/Doctrine/DBAL/Platforms/SqlitePlatform.php
+++ b/lib/Doctrine/DBAL/Platforms/SqlitePlatform.php
@@ -109,6 +109,23 @@ class SqlitePlatform extends AbstractPlatform
         return 'SUBSTR(' . $value . ', ' . $position . ', LENGTH(' . $value . '))';
     }
 
+    /**
+     * returns the position of the first occurrence of substring $substr in string $str
+     *
+     * @param string $substr    literal string to find
+     * @param string $str       literal string
+     * @param int    $pos       position to start at, beginning of string by default
+     * @return integer
+     */
+    public function getLocateExpression($str, $substr, $startPos = false)
+    {
+        if ($startPos == false) {
+            return 'LOCATE('.$str.', '.$substr.')';
+        } else {
+            return 'LOCATE('.$str.', '.$substr.', '.$startPos.')';
+        }
+    }
+
     protected function _getTransactionIsolationLevelSql($level)
     {
         switch ($level) {
@@ -403,4 +420,18 @@ class SqlitePlatform extends AbstractPlatform
     {
         return ($a % $b);
     }
+
+    /**
+     * @param string $str
+     * @param string $substr
+     * @param int $offset
+     */
+    static public function udfLocate($str, $substr, $offset = 0)
+    {
+        $pos = strpos($str, $substr, $offset);
+        if ($pos !== false) {
+            return $pos+1;
+        }
+        return 0;
+    }
 }
diff --git a/lib/Doctrine/ORM/Query/AST/Functions/LocateFunction.php b/lib/Doctrine/ORM/Query/AST/Functions/LocateFunction.php
index aa158a916..323093763 100644
--- a/lib/Doctrine/ORM/Query/AST/Functions/LocateFunction.php
+++ b/lib/Doctrine/ORM/Query/AST/Functions/LocateFunction.php
@@ -38,20 +38,22 @@ class LocateFunction extends FunctionNode
 {
     public $firstStringPrimary;
     public $secondStringPrimary;
-    public $simpleArithmeticExpression;
+    public $simpleArithmeticExpression = false;
 
     /**
      * @override
      */
     public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker)
     {
-        //TODO: Use platform to get SQL
-        return 'LOCATE(' . $sqlWalker->walkStringPrimary($this->firstStringPrimary) . ', ' 
-             . $sqlWalker->walkStringPrimary($this->secondStringPrimary)
-             . (($this->simpleArithmeticExpression) 
-                 ? ', ' . $sqlWalker->walkSimpleArithmeticExpression($this->simpleArithmeticExpression) 
-                 : ''
-             ) . ')';
+
+        return $sqlWalker->getConnection()->getDatabasePlatform()->getLocateExpression(
+            $sqlWalker->walkStringPrimary($this->firstStringPrimary),
+            $sqlWalker->walkStringPrimary($this->secondStringPrimary),
+            (($this->simpleArithmeticExpression)
+                ? $sqlWalker->walkSimpleArithmeticExpression($this->simpleArithmeticExpression)
+                : false
+            )
+        );
     }
 
     /**
diff --git a/tests/Doctrine/Tests/ORM/Functional/QueryDqlFunctionTest.php b/tests/Doctrine/Tests/ORM/Functional/QueryDqlFunctionTest.php
index ad0f9ecae..9c350b886 100644
--- a/tests/Doctrine/Tests/ORM/Functional/QueryDqlFunctionTest.php
+++ b/tests/Doctrine/Tests/ORM/Functional/QueryDqlFunctionTest.php
@@ -99,16 +99,21 @@ class QueryDqlFunctionTest extends \Doctrine\Tests\OrmFunctionalTestCase
 
     public function testFunctionLocate()
     {
-        $this->markTestIncomplete('Locate is not working equally across platforms, needs some work.');
+        $dql = "SELECT m, LOCATE(LOWER(m.name), 'e') AS loc, LOCATE(LOWER(m.name), 'e', 7) AS loc2 ".
+               "FROM Doctrine\Tests\Models\Company\CompanyManager m";
 
-        $result = $this->_em->createQuery("SELECT m, LOCATE(m.name, 'e') AS locate FROM Doctrine\Tests\Models\Company\CompanyManager m")
+        $result = $this->_em->createQuery($dql)
                          ->getArrayResult();
 
         $this->assertEquals(4, count($result));
-        $this->assertEquals(0, $result[0]['locate']);
-        $this->assertEquals(2, $result[1]['locate']);
-        $this->assertEquals(10, $result[2]['locate']);
-        $this->assertEquals(25, $result[3]['locate']);
+        $this->assertEquals(0, $result[0]['loc']);
+        $this->assertEquals(2, $result[1]['loc']);
+        $this->assertEquals(6, $result[2]['loc']);
+        $this->assertEquals(0, $result[3]['loc']);
+        $this->assertEquals(0, $result[0]['loc2']);
+        $this->assertEquals(10, $result[1]['loc2']);
+        $this->assertEquals(9, $result[2]['loc2']);
+        $this->assertEquals(0, $result[3]['loc2']);
     }
 
     public function testFunctionLower()